Home / 191,631.20-287,446.80-172,968.80

Finding the Fourth Proportional to 191,631.20, 287,446.80 and 172,968.80

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Solution

The fourth proportional to 191,631.20, 287,446.80 and 172,968.80 is: 259,453.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,631.20 : 287,446.80 = 172,968.80 : x
  2. Step 2: Convert to fraction form
    191,631.20/287,446.80 = 172,968.80/x
  3. Step 3: Cross multiply
    191,631.20x = 287,446.80 × 172,968.80
  4. Step 4: Simplify right side
    191,631.20x = 49,719,328,059.84
  5. Step 5: Solve for x
    x = 49,719,328,059.84/191,631.20
  6. Step 6: Final answer
    x = 259,453.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.